...Perennials. Stolons
are not produced. Rhizomes
are short, but dense colonies
from rhizomes are seldom produced. Stems are scapose
or may bear 1 or 2 well-defined leaves, and are densely pubescent
with long, spreading
hairs. Typical height is from 1 to 2.5 feet.

Basal leaves
(persistent throughout the season) are ovate
to broadly oblanceolate,
borne on long petioles,
and have long-ciliatemargins, with
coarse teeth and shallow lobes.
Stems may bear 1-2 well-developed or small, scale-like leaves that are
similar to basal leaves, but smaller.

Plants of woods, open woods,
roadsides. The early flowering period occurs in June, and may be followed during
Autumn by a second flowering. Not native.

.

Similar species: In morphology, Hieracium
murorum is closest to Pilosella species, but differs in not
producing rhizomes. In addition, unlike Pilosella species,
which have untoothed leaves, the leaves of H. murorum are
coarsely toothed and borne on petioles. H. murorum is the
Linnaean type for the genus Hieracium.

H.
murorum is also similar to H.
venosum, which differs in being less pubescent, having somewhat
smaller heads, and leaves that are distinctively marked with purple
veins.

For additional information
on this and other hawkweed species, as well as a list of selected
references, see my article, "Understanding
Hawkweeds".

.

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